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	Particle-in-Cell Simulation and Optimization for a 220-GHz Folded-Waveguide Traveling-Wave Tube
	Zheng, Ruilin ; Ohlckers, Per ; Chen, Xuyuan ; Chen XY(陈旭远)
刊名	http://dx.doi.org/10.1109/TED.2011.2145420
	2011-07
关键词	FABRICATION DEVICES
英文摘要	The folded-waveguide slow-wave structure (SWS) is a robust beam-wave interaction circuit for millimeter-wave traveling-wave tubes. We applied a particle-in-cell solver (Computer Simulation Technology Particle Studio) to analyze and optimize a 220-GHz folded-waveguide SWS. The beam-wave interaction and the electron beam dynamics were studied based on simulation results. The influence of the beam tunnel, with respect to its transverse shape and size, on the circuit performance was investigated in detail. A beam tunnel with a square cross section exhibits lower gain and efficiency and similar bandwidth compared with a beam tunnel with a circular cross section. With a proper phase-velocity taper employed in the nonlinear region of the circuit, the small-signal gain, peak saturated output power, and efficiency were significantly improved, increasing from 21.5 to 27.8 dB, 41 to 70.5 W, and 4.5% to 8%, respectively, for a 36-mm-long loss-free circuit. A simulated 3-dB bandwidth of similar to 15 GHz is demonstrated.
语种	英语
出版者	IEEE T ELECTRON DEV
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/90419]
专题	萨本栋－已发表论文
推荐引用方式 GB/T 7714	Zheng, Ruilin,Ohlckers, Per,Chen, Xuyuan,et al. Particle-in-Cell Simulation and Optimization for a 220-GHz Folded-Waveguide Traveling-Wave Tube[J]. http://dx.doi.org/10.1109/TED.2011.2145420,2011.
APA	Zheng, Ruilin,Ohlckers, Per,Chen, Xuyuan,&陈旭远.(2011).Particle-in-Cell Simulation and Optimization for a 220-GHz Folded-Waveguide Traveling-Wave Tube.http://dx.doi.org/10.1109/TED.2011.2145420.
MLA	Zheng, Ruilin,et al."Particle-in-Cell Simulation and Optimization for a 220-GHz Folded-Waveguide Traveling-Wave Tube".http://dx.doi.org/10.1109/TED.2011.2145420 (2011).

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